Results 91 to 100 of about 11,251 (232)

Moisture‐Flux‐Sensitive Convection Strengthens MJO Preconditioning

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Despite decades of research, the Madden‐Julian Oscillation (MJO) remains challenging for global prediction systems, partly because its representation is sensitive to convection‐environment interactions. We evaluate a new prognostic convective closure in NOAA's Unified Forecast System (UFS) that incorporates large‐scale moisture‐flux ...
L. Bengtsson
wiley   +1 more source

A Study of Intraseasonal Temperature Variability in Southeastern South America

Journal of Climate, 2012
Abstract The main goal of this work was to conduct an intraseasonal climate variability analysis using wavelet and principal component analysis over a southeastern South American daily maximum and minimum temperature series from the end of the nineteenth until the beginning of the twenty-first century. The analysis showed that there is a
Naumann, Gustavo, Vargas, Walter Mario
openaire   +3 more sources

Amplified Decline in Arctic Atmospheric Stability Under Arctic Warming

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Atmospheric stability quantifies the resistance of the atmosphere to vertical displacement and turbulent mixing. Under Arctic warming, the atmosphere has become more dynamically active, which may influence atmospheric stability. Using ERA5 reanalysis, we show that the decrease in Arctic atmospheric stability has been amplified relative to the ...
Guorui Shi, Lujun Zhang, Yuang Liu, Chen Zhou   +3 more
wiley   +1 more source

The Intraseasonal and Interannual Variability of Arctic Temperature and Specific Humidity Inversions

Atmosphere, 2019
Temperature and humidity inversions are common in the Arctic’s lower troposphere, and are a crucial component of the Arctic’s climate system. In this study, we quantify the intraseasonal oscillation of Arctic temperature and specific humidity
Lejiang Yu, Qinghua Yang, Mingyu Zhou, Xubin Zeng, Donald H. Lenschow, Xianqiao Wang, Bo Han   +6 more
doaj   +1 more source

Modeling Circulation‐Precipitation Overlapped Co‐Evolution for Improving Subseasonal Prediction in the Yangtze River Basin

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Severe precipitation in the Yangtze River Basin (YRB) poses escalating flood risks, underscoring urgent needs for skillful subseasonal prediction. In this study, we develop an integrated dynamical‐statistical downscaling model based on overlapping circulation‐precipitation co‐evolution (OCPCE), which merges prior and concurrent circulation ...
Fang Zhou, Hong‐Li Ren, Li Gao, Yiwei Li, Lin Wang, Minghong Liu   +5 more
wiley   +1 more source

The Unique Role of the Intraseasonal Zonal Wind in March Over the Equatorial Western Pacific Contributes to Shaping the Subsequent ENSO Development

Geophysical Research Letters
The predictability of the El Niño‐Southern Oscillation (ENSO) is significantly limited by the spring predictability barrier (SPB). Our observational analysis suggests that considering high‐frequency wind components during the spring season may mitigate ...
Ting‐Wei Cao, Fei Zheng, Jin‐Yi Yu, Xiang‐Hui Fang, Wen‐Xiu Zhong   +4 more
doaj   +1 more source

Distinct Impacts of Western and Eastern Maritime Continent Convection on the South China Sea Tropical Cyclone Activity in Autumn

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Convection anomalies in the eastern and western Maritime Continent (MC) during boreal autumn exhibit distinct characteristics and climatic effects, but their impacts on South China Sea (SCS) tropical cyclones (TCs) remain unclear. Here we reveal that the eastern MC convection mode, although it explains less convection variance, exerts strong ...
Zeming Wu, Chundi Hu, Chengyang Zhang, Yuexing Cai   +3 more
wiley   +1 more source

Skillful Prediction of Indian Monsoon Intraseasonal Precipitation Using Central Indian Ocean Mode and Machine Learning

Geophysical Research Letters
Monsoonal precipitation is dominated by intraseasonal variabilities, whose skillful prediction lead time is currently less than 5 days and remains a grand challenge. Here we show that an intrinsic variability in the Indian Ocean, the Central Indian Ocean
Lei Zhou, Yanwei Yu, Bingqi Yan, Xingyu Zhao, Jianhuang Qin, Wei Tan, Youmin Tang, Xiaofeng Li, Xiaojing Li, Junyu Dong, Dake Chen, Raghu Murtugudde   +11 more
doaj   +1 more source

The Quasi-Biweekly Oscillation of Winter Precipitation Associated with ENSO over Southern China

Atmosphere, 2018
Using ERA-interim Reanalysis data and observational data, the intraseasonal oscillation of the winter rainfall in southern China is studied. The mean square deviation of daily precipitation is used to express precipitation variability, and winter ...
Qiaoyu Tong, Suxiang Yao
doaj   +1 more source

Impact of Intraseasonal Oscillations on the Activity of Tropical Cyclones in Summer Over the South China Sea: Nonlocal Tropical Cyclones

Frontiers in Earth Science, 2020
In addition to tropical cyclones (TCs) locally formed in the South China Sea (SCS), there are also TCs that initially form over the Northwest Pacific (NWP) and move westward to enter the SCS (often called nonlocal TCs).
Zheng Ling, Zheng Ling, Yuqing Wang, Guihua Wang, Hailun He   +4 more
doaj   +1 more source